Saturday, 7 May 2016

Roll Me Over , Again !!

Section 6 is complete , so need to remove it from the shed as a new shipment of timber is due to arrive  for the next piece of the puzzle  . The bow section has been sitting in the front yard  , after its disconnection from section 6  , so its now time to Upturn it into something more akin to a boat . The cradle was round the back yard under one of the earlier sections so dragged it out and round the front yard and positioned it over Section 5 .

 
 

The Cradle is used for all sections of the main hulls so need to brace the hull inside the cradle , don't really want it moving during the rotation . Also need to bolt-on the semi-circular addons that allow for a smooth rotation .
 
 
 
Now we attach the ropes , chains and other bits and start the rotation ( time to panic ! )
 
 
 
Over we go  , nice and slow , try not to screw it up !
 
 
 
Making progress , ropes pulling from one way to make it roll , ropes in the other direction to stop it rolling by its own will ( don't ask , drama when we rolled section 2 still gives me nightmares)
 
 
 
 
This is when it has a mind of its own and all we can do now is to control the descent  , no more pulling  required , its on its way down .
 
 
 
Maximum load on descent chain at this time but its getting closer to its destination , taking it really  slow .
 
 
 
 
Phew !!! , its down  , I can Breathe again !! , Finally , something that actually looks like a boat .
 
Tomorrow I'll move this section into the side yard and we will look at getting section 6 out of the garage , I'll just remove the addons and manoeuvre this piece out of the way ( don't want to upset the neighbours as its taking up the shared driveway at the moment ) .








Tuesday, 1 December 2015

Stern tube ,is this where we launch torpedo's ?

Have made the final changes to the fiberglass Prop shaft tubes , have added a bit more beef to the end with the cutlass bearing  , better to be over strong than have a weakpoint .


The basic tube is 10mm thick fiberglass , but the end  has additional material to bring it up to 16mm


Made an initial thin tube by rolling wetted out fiberglass cloth over a steel pipe  , removed when set by slitting it off  , had to be a tight fit as the cutlass bearing is supposed to be a tight fit . Rejoined the tube ( while ensuring straightness and sizing )  and added more layers of cloth to bring it up to the 10mm thickness . Finally added the extra cloth to the cutlass bearing end ( just last weekend ) .
Cutlass bearing is a tight press fit and its as straight as a dye , must remember process as i need to make another one as well ( darn catamaran ) .

Have fitted the tube into a piece of the Keel structure , this will then be laminated into the main Keel.

Tuesday, 17 November 2015

Thinking about a support Boat

Jigsaw will require a tender / support boat with it as most of the construction will take place when its already in the water  .
First thought was

With a cross section of
A bow door like a landing craft and a fully enclosed floor for boyancy , problem is its not wide enough for all the jobs it needs to do  , Maybe a catamaran version ?

Sunday, 1 November 2015

Time to Deliver my Second Baby

Bow section on the Second hull is now ready for its first look at a bright new world .

 

Have made some changes to the rollers that the boat will move on  , so hopefully it won't be as big a squeeze as the first time we did this .
 
 
Slowely she makes her way  , a naked baby this one as the garage is too full of wood to allow me to wash her down and paint  , so outside we go !
 
 
 
The changes i made to the rollers were sucessful , we had at least an inch of clearance this time , created steel L brackets that were attached to the main bulkhead that allowed me to lower the assembly closer to the ground .
 
 







 
 
And then  , just like a normal birth  , she rushed out to see the sunshine  , but OOP's
 
 
 
Things come to a sudden stop , the new low-riders are low alright , a little too - low for the uneven concrete surface , ah-well  , we are outside now  . Time for Baby's first bath .
 
 
 
A quick wash and a rub-down  , time to paint this baby .
 
 
Just a light coat of Hempel's Light Primer , this will make it easier to spot any inperfections in the finish so we can correct these with a bit of sanding or filler  .
 

As with the other hull  , this outside surface has the partial skin cover that allows for the rest of the side to be added later but with plenty of surface attachment .
 
The rest of the paint hasn't turned up yet so the additional layers of primer will need to wait .




Sunday, 18 October 2015

Almost finished the Sharp bit !

It been a while since my last post , so quite alot has been done ,
The plywood party is complete so the dual layers of plywood have been fitted .


Have also added the conical bow section , the laminated forefoot capping strip , the external keel and the sides have also been fiberglassed .

 
Have left some of the peelply on the sides as it helps protect them while I fiberglass the bottom of this section .
Had a couple of mis-adventures with this section , created the conical bow section and fiberglassed the inside of the wooden strips used to create the shape , but when i went to refit to the bow the shape had changed slightly but since the glass had started to go hard was forced to cut the section in two and reglue / re-epoxy , two layers of 1200gm  fiberglass just doesn't want to bend once it starts going off !.

The Laminated forefoot capping strip was made in-situ and is made from strips of 6mm solid timber , on the other hull I had used 8mm strips , but they were differcult to bend , thus 6mm for this section , but it wasn't without its issues  , pays to remove the holding screws ( for laminating ) before the epoxy goes fully off  , was a little late on a couple of them  , the heads on the screws snapped off when attempting to remove ( 12g x 50 mm ) , so the shafts are still buried inside the lamination , lucky they were close enough to the middle of the section so they weren't exposed when i shaped the forefoot .

 
This weekend I have been fiberglassing the bottom sections  , one side of the bottom section was done yesterday and the other side today , the glass overlapps the keel and the chines ,giving two layers of cloth at these points .
So now all i need to do on this section is remove the peelply and prepare the section for painting  ,
joy oh joy  , more sanding !!!
 



Sunday, 16 August 2015

Frames Done , Time for a Plywood Party



These curvy bits may look great , but there is a lot of work getting them straight ( HUH ) , well correct anyway .  Framing is complete  , now I just need to  fit the connecting bolts into the frame and we can start the Plywood Skinning of the first section of the second Hull . Each stringer ( longitudinal  frame )  is bolted to the transverse frames  , originally planned on using Stainless Steel bolts but changed to stainless coach screws , easier and as I soak each hole in activated epoxy resin the holding strength is much better than a standard fit , thanks to the WEST guys for that suggestion in their book .



Garage is a bit messy  , but didn't have enough solid timber for this section so had to get another shipment so got enough wood for the next section as well . Have timber stacked everywhere . Plywood sheets ( 18 x 12mm and 4 x 18mm ) have also arrived , so are stacked on the side of the garage , have barely enough room to move , yet along work . At least this being the bow section  , its at least narrow at the entrance anyway .


This being the starboard hull the first bulkhead 45 degree additional section is on the left of these pictures  , would have been Embarrassing if I had made two Port hulls .

Thursday, 28 May 2015

The Jigsaw pieces lineup again

Have completed building the frames , now we start the assembly process , first to be done is the attachment of the stem frame to the Primary Bulkhead , relatively simple , couple of stainless coach bolts and an amount of Epoxy glue .

These are the sheet frames , these will run from the Primary bulkhead , rearward at 900mm intervals .
Additional gussets are yet to be fitted to the non-sheet side of the solid timber sections , do these as i fit the longitudinal stringers .